Train-signal



A. l. BROOKINS TRAIN SIGNAL.

APPLICATION FILED mm2?. 1919.

QSE. N .SM

2 SHEETS-SHEET l.

Patented Mal'. 1, 1921.

IIYI/ENTOR.

Hnlrevu IT. Bro@ 1111s, f3

ATTORNEY...

. A. L Baooxms.

TRAIN SIGNAL. APPLICATION FILED IAN. 27. |919.

1,369,881 Patented mm1, 1921.

2 SHEETS-SHEET 2.

` V EN TOR.

revv j BY f I fww Tw@ Y l1,369,881. i'

v y'To all whomV t may concern:

UNITED STATES ANDREW .'r. Baooiziivs, or CHICAGO, 'ILLrNoisl TRAIN-SIGNAL.

'- Beit known that I, ANDREW State of Illinois, have invented certain new and useful lImprovementsin Train-Si als for Use in the Cabv of an Engine or otor,

lof which the following is a full and complete description, sufficient f. to yenable one obtain a 'signal which is certain in its opera-- tion, when 1n operative condition, and which 'skilled in the art'to understand, make, and

use the same, when'taken in connection with the drawing'accompanying and forming a part hereof.

' This invention relates to a device which. canbe installed in a cab in position to bev readily observed by a person. or persons in lthe caband which will indicate which' one,

if any, of a plurality of electric circuits is energized. Andthe objects of the invention kare to will automatically indicate its being in an inoperative condition; which is n ot liable to getin inoperative condition; which 4consists Voffew'parts joined to obtain a multiplicity In the drawing referred to Figurel is anY elevation', with theside of the case removed A' struction to view; Fig. 2l is a sectional View' on line 2 2' of Fig. 1', viewed in the direc# ranged' tofyieldingly hold said lever with to disclose the operative' parts of the contion indicated by the arrows; andFig. y3 is a diagram of the electric vcircuits forming 3 elementsl 1n` saldconstruction.

' A reference characterfap'plied to.,designate a4 given part is used toindicate said .part

--throug'hout the several figures of the drawing, wher`ever thesame appears.-

A represents the'case'of a device embodying .f1-his invention.VVV B, Bindicate (dials.v AV

portiony of -dial is illustrated as broken away to exposetojgview the installation be- 'tween 's'aidplatesl' 6,75 Aindicate apertures in dials B, B. 'G,- C. indicate resistance 'i coils.r D represents a lever which isvfpivotally munt'edon 'shaft D and D a spring ardisks d, d', which aremoun'ted on theV ends "of vsaid lever, in` Jfront, of aperturesj b, Zn.`

E, EA illustrate yelectric lamps which may be Vvievv'fed-through apertures b, b whenV disks ,fd are iii-the positonfinwhich they are i Specication of Letters Patent.

J. lASRookiNs,y a citizen of the United States, and a resiv dent of Chicago, in the county of Cook and Villustrated in Fig. l; and are-not exi posed to view when said lever is turned, by spring D., on ,said spring turning shaft D, to bring said disks in front of said apertures; said disksormin'g shutters. F, F',

F, F, f, yf` 'and f indicate electric con .ductors parallel with kthe "respective lampsV E, E. (r, G represent Velectromagnets g, gf lthe y armatures-thereof. Hy represents a commutatorring which isrigidly secured to arma Resistance coils C, C', are .in

ture and disklever- D, and insulation on said ring. Armatures g,l g, leverD and' ring H are joined, to move in unison and are moved by energiz'ation of magnets Gr, Gr', and byV spring D when said magnets aref not energized.V I, Ii and J ,respectively represent brushes to commutator ring H. vWhen lever D is in the position which is illustrated Yiii Fig. 1, the brushesI, I are`oninsula`- tion it; and when said lever is turned on its A"i-TATENT oFFicaff Patented Mar.k 1, '1921.

Application led January 27, 1919. Serial No. 273,258.

pivotalpoint, (by turning of shaft D)` so that-the disks d, d" 'are in front of apertures b, b,.saidbrushes are in electrical contact lwith commutator ring H and in electrical connection with brush J, which is, at all l times, in electricalcontact with said ring. Conductor fis :electrically attached to brush I;l conductor f to brush I', and conductorv `F to brush J. D vrepresents'a Vspring which lis arranged tofyielding'ly hold lever` D in position withidisks d', d in front of apertures b, b,and wh'ensaid lever is in the last .named position the brushes I', I not being on insulation lathe lcircuits 'of which said brushes and brush J .areelementsare :con-f1' tinuous'.- Asfstated, when the. coils of elec-Y i ltroiiiagnets G,G, are notenergized spring SD`controls the position of leverv D, and.

when said coilsare energized saidmagnets controlsaid position, (by attracting armatures g, g), moving said lever 'from' the po- .sition in which itis yieldingly held.` by

spring 'DI4 into the` position in which it is illustratedv in Fig. 11, against the' tension of said spring.A j Y A I K, Kv', and K' indicate terminals', (see Fig. 3) ,and La movable conductor'the yfree yend of which is adapted to be moved-into electrical contact with' any one of said ter-l minals. M, (Fig. 3) indicatesal vertically;

movable plunger. When-'plunger Meis in its lowestposition the movable conductor .L is in electrical contact with terminal K, and from Vsaid terminal movable "circuitcloser Z is successivelybroughtinto electrical `bodying'this invention Whether said mova-y contact Vwith terminals K and K, as` said plunger is raised'toV its highest position. The means to Vmove and retain plungerrM in a determined positionV and thereby control the position of movable conductor L forms no part of this invention, and itfmay-be considered, so: far as this invention and its operation isY concerned, that the position vof said movable conductor VL relative to terminals K, K, and KY controls the several operations and functions ofthe apparatus emble conductor be moved manually, mechanically, or-.otherW1se, and hence said movable Vconductor is merely diagrammatic'ally indicated inFig. 8. f Y I As the normalcondition of' a track on which a train or othermoving body is trav-V eling, onY the cab of' Which thisV apparatus is installed,is clear, what I call the normal position of movable conductorL is with the i free or movableend thereofin' electrical conl Y' tact with terminal K (Withlamp E ener- Y gized), and it is so-illustrated,y and indicated. hen said track is not clear, but is under such conditions that caution shouldV be exercised by the engineer or other person in-control ofsaid train, the caution signal .fis givenjorg' displayed; said caution f signal train proceeding, said free end is Vin. contact with `terminal l neither lamp E vor Ef is Y lighted, 'and Yboth saidV lamps areobstructed g bydisks-cL-Z being in front of apertures ZJ, b',

AWhere they are yieldingly held by springD.

N, (Fig. 3,); indicates a battery or other suitable means to energize' the several circuitsWhichare illustrated andhereinafter .tracedyand n represents a conductor fronr` saldenergizing means to the pivoted end of movable conductor L. i

1- Said circuits are traced as followszf Assuming Vmovable lever D to be in ,the polsitionin which thedisks d, d, are in front of apertures b, -,'jthe danger signal having been previously maintained and a change in Ythe position of movable conductor LV hav- Y .ing Voccurredjtherewill be a closedfcire l cuit from energizing means N `Which in- Y. cludes conductor n," movable conductor L,

(said conductor'being on terminal K,' as

of magnetsG, G.,rfand on conductors F" fbackto This-'circuit Yshunts `the sig- Y' nal E and resistance C, and said signal will;

I not befWell displayed until the lever'rD has been` turnedvon; its pivot, by the lattraction 1 of armatures g, g by magnets G,G, to removevthe disks CZ, cl from infront of aper-y tures b, b; that is, to the position in Which'it is illustrated in Fig. l. Said turning brings `brushes I, I', on to insulation it of the comrfmutator ring H, and the last above recited circuit, of which said ring and said brushes are elements, is vbroken, andV thesignal E will then lbe Welldisplayedl Assuming movable conductor L to be in electrical contact With terminal AKi ,a closed Ycircuit WillY beA formed comprising the following members',-ro'm generating means N, on conductor n, movableconductor L,

conductor F lama E" and resistanceV C conductor F, the coils of ymagnets. Gr, Gr, conductors.F to NVWhen lever 1s 1n the positionfin which it is illustrated in Fig.. l.

Assuming lever fD tol be-i'nposition With disks d, cl covering apertures?) ab .at yfthe Ytime of thexestablishing o" `the last-above named circuit, there Will also be an additional circuit established, Which-may be traced as! leading from conductor Fon toV the coils of magnets Gr, GC.' I This circuit includes also the energi-Zer N,1condu`ctor Va, movable conductor L,.conductor F', and conductors F which are common to it and It Willbeob'served that the c'oilsoi magnets G,G and-conductorsFm'are common to allot the circuits.

The operation of the apparatusis,- lltk'heln a. lcircuit breaker comprising' movablefconlductor Land terminal K, (or K), isaclosed,

a circuit of which said circuit breaker'and said circuit 'breaker is open both .circuits of which movable conductor Lfof saidcircuit breakeris` an element are open, and dead,

' -and'lever Dis moved by springfD toga'position Wheredisks d, d-.aref infront of apertures Z), b', (magnets '.G, Gnotbeing energized).fgSaid circuits being deadfif it be the terminal K, VV(asjindica-te'd vinJFig.'*3);,vthe

circuit which is tracedfrom N, onf/1 L, K,

`conductor 7'", brush I, ringV ILlbrfush J, to

-to .the last preceding circuit; andthe lamps Y. Ef and resistance. C. are shu-nted'vthereby..V Y t f llt) assumed' that movable conductor-L ismoved jj .to again bring it Vin yelectrical contact With F, f, I, H, J, coilsof magnets GfGfz-,fand -V beV lighted.l

g'fF-f to, isagain established as isf also the. l f circuit which include'slamp, E-and resistillustrated), conductors lF, f, Ybrush I, (itr .not being on insulation it), commutator Aring- H, brush J 'and conductor fk toYV Qconductor'Ff, and thence through the` coils f the installationV of this-apparatus in the cab .of ani engine or motor, itl-.Will Vindicatethe Y Vcondition 'of the track:ahead,as follows g' by V Y' lighting and exposing to view lampv E lifY the clear signal corresponds with said condi-` tion; the lampfE- ifijthe -cautionk signalV Attention'is` the fact byif` corresponds; and the lever D with, disks of said magnets to form' a plurality of electric circuits, armatures to said magnets, a

movable circuit closer arranged to break said circuits and in selective order to close said circuits, and means common to said circuits to energize the closed one thereof, means to obstruct a view of said lamps, and means comprising said magnets and armatures to remove said obstruction..

2. In a train signal, electric lamps, resistance coils, electromagnets, and conductors in electric connection With said lamps and with the coils of said magnets to form a.

plurality of electric circuits ,in which said lamps and resistance coils are in multiple and said magnets are in multiple, armatures' to said magnets, a movable circuit closer arranged to break said circuits and in selective order to close said circuits, and means, common to said circuits to energize the closed one thereof, means to obstruct a view of said lamps, and means comprisingsaid magnets and armatures to remove said obstruction.

3. In a train signal, the combination of,

an electric signal, yielding means to obstruct l the view of said signal and means to remove and maintain said obstruction removed, said e means to remove and maintain comprisin i electromagnets and the armatures thereo an electric circuit comprising conductors and a circuit breaker controlled by said means to remove and maintain, and a second electric circuit comprising conductors and said signal, said circuits also comprissaid circuits. y

4. In a `train signal, electric lamps, means to obstruct a view of said lamps, means to yieldingly hold said means to obstruct in` obstructing position, electromagnets and armatures thereto arranged to control the position of said means to obstruct, electrical conductors electrically connected to said .lamps aiid'to the coils of said magnets and adapted to form elements of electric circuits, in combination Withadditional coning, as common thereto, said magnets, a movable circuit closer'and means to energize ductors, 'a circuit breaker arranged to make said additional conductors continuous and to break the continuity thereof, on said means toobstruct being inv obstructing position and moved therefrom, saidV additional conductors and circuit breaker adapted to form elements of additional circuits of which said coilsare also elements, and said last named circuits arranged to shunt said lamps, additional means to control the con- Y tinuity of the conductors in said circuits,

and means to energize closed ones of said circuits.

ANDREW J. BROOKINS. g

Y Witnesses: Y

CHARLES TURNER BROWN, M. BALL. 

